Yep--black oil sunflower seeds are viable, as are striped sunflower seeds. Ours sprout up every year, only to be lopped off and stripped down to bare twigs by the bunnies... ...or by Brier... Very pretty, DOG!

__________________
"We are--each of us--dying; it's how we live in the meantime that makes the difference."

"It's not what you gather, but what you scatter that tells what kind of life you have lived!"

"Be kinder than necessary, for everyone you meet is fighting some kind of battle."

I grow them deliberately, from bought packets of seeds, while my husband grows them by accident, spilling bird seed when he feeds our cockatoo. Yours look great Dee-O-Gee , and you've a lovely garden by the looks of things. Not a weed in sight - you should see the weeds here. LOL.
I am about to plant sunflower seeds now and have some new types this year, which will be interesting.

I've also got one growing from a bird's sunflower seed in my mum's garden, I had it here at my apt in a pot until the building decided to power wash the balconies so I had to transplant it. It's only about 2 feet tall w/a flower head just starting

__________________
Avoid biting when a simple growl will do

The Spirit Lives As Long As Someone Who Lives Remembers You - Navaho Saying

Vindication ~ For all those pets who became sick or lost their lives from tainted pet food

The new ones are Lilac Spray, Italian White and Ice Lady. Italian White is a branching sunflower with dark chocolate centres and creamy white petals. Ice Lady has huge golden yellow heads up to 50 cms accross. Lilac Spray is a tall, multi-headed variety. Photo's will be posted if I get them growing. I'll be flat out this Spring and Summer I think. Might be getting a new dog shortly, a 2 year old female ACD, and training her and getting a good bond with her will cut into my gardening time I reckon. Bring on the longer days.